What is aids to the human eye?

Answer 1

We only see things when light reflects from an object and enters our eyes. The human eye is only sensitive to certain types of light - we cannot see ultra violet light or infra red radiation.

The human eye consists of 7 main parts:

Lens: Focuses the light on the back of the retina by concentrating the light

Retina: Sends messages to the brain to tell you what you are seeing - converts light into vision

Pupil: Controls how much light enters the eye

Cornea: - Protects the eye.

- Controls and focuses incoming light

Iris: (The colored part of the eye) Contracts and expands to regulate the amount of light that enters the eye.

Optic Fiber: Carries electrical impulses (converted rays) from the eye to the brain.

Conjunctiva: Its cell produces mucous with helps lubricate the eye.

All types of eyes work in the same basic way; they all detect light and convert it to electrical signal and transmits them to the brain to be seen as images.

Answer 2

magnifying glass

telescope

microscope

Answer 3

magnifying lens ,telescope,microscope